Dual thermometer



FIG. 1 is a front perspective view of the invention, with the partially retracted probe shown in phantom lines;

FIG. 2 is a rear perspective view of the invention;

FIG. 3 is a top view of the invention;

FIG. 4 is a rear view of the invention;

FIG. 5 is a left side view of the invention;

FIG. 6 is a front view of the invention;

FIG. 7 is a right side view of the invention; and,

FIG. 8 is a bottom view of the invention.

The broken lines showing of indicia is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

The ornamental design for a dual thermometer, as shown and described. 